Automatic gun.



A. T. DAWSON a G. T. BUGKHAM. 'AUTQMATIG GUN.

APPLIOATIOEE FILED EGV. 26. 1906.

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ARTHUR TREVOR DAWiSON AND GEORGE THOMAS BECKHAM, OF LONDON, ENGLAND,

ASSIGNORS TO VICKERS SONS 8; MAXIM LIMITED, OF

WESTMINSTER, ENGLAND,

AUTOMATIC GUN.

Specification of Letters Patent.

Patented May 4, 1909.

Application filed November 26, 1906. Serial No. 345,232.

To all whom it may concern:

Be it known that We, ARTHUR TREVOR DAWSON, lieutenant Royal Navy, director and superintendent of ordnance works, and GEORGE THOMAS BUCKHAM, engineer, both subjects of the King of Great Britain, residing at 32 Victoria street, VVestminste, in the county of London, England, have invented certain new and useful Improvements in Automatic Guns, of which the following is a speciiication.

This invention relates to automatic guns and has for'its chief object to enable such guns lto be made of considerably less weight than heretofore, For this purpose we make the water-jacket of thin steel tubing suitably strengthened by corrugating its surface, the said corrugations being advantageously arranged lengthwise of the jacket and extending to within a short distance of its ends. The said corrugations also increase the area of the jackets surface exposed to the atmosphere, so that said surface will be kept cooler than in the case of a lain watery-jacket as hitherto generally emp oyed with automatic guns.

In order that our said clearly understood and readily carried into effect we will describe the same more fully with reference to the accompanying drawings in Which:-

Figure 1 is a side elevation of a Maxim gun with our improved corrugated water-jacket. Fig. 2 is a longitudinal section, and Fig. 3 a cross-sectioh on the line 1-1 of the said water-jacket.

A is the water-jacket of thin steel tubinw, the body of which is reduced to a suitable thickness and afterward corrugated. The ends c a2 are left thicker than the body so that internal screw threads can be formed thereon for connecting the jacket to the gun casing B, andthe front block C to the jacket. The corrugations a are in the example shown formed longitudinally with respect to the jacket. Obviously, however, the said corrugations could beotherwise formed and arranged without departing from our invention.

What we claim andl desire to secure by Let ters Patent of the United States is:-

invcntion may be j tube longitudinally corrugated and thick-I ened at the ends for connection with the 1Cgun substantially as and for the purpose speci ed 4. A water jacket for an automatic or other machine gun, comprising a thin steel y tube longitudinally corrugated and thickened at the ends which are internally screwthreaded for connection with the gun substantially as and for the purpose specified.

5. The combination with an automatic or other machine gun of a thin steel corru ated tube Vand means for connecting it wit the gun substantially as and for the purpose specified.

6. A water jacket for an automatic or other machine gun comprising a thin steel tube provided with depressions on its outer face thereby forming a series of corrugations.

7. A Water jacket for an automatic or other machine gun comprising a thin steel tube provided with depresslons on its outer face t ercby forming a series of corrugatlons,

said tube thickened at its ends whereby" the same can be connected with the gun.

8. A water jacket for an automatlc or other machine gun, comprlslng a thin steel tube provided with depressions on its outer face, therebyiorming a series of corrugations which project both inwardly and outwardly beyond the surface of the tube.

In testimony whereof we aiiix our signatures in presence of two witnesses.

ARTHUR TREVOR DAWSON. GEORGE THOMAS BUOKHAM.

Witnesses:

HENRY KING, C. A. SEARL'E. 

